A flushing device for a water tank and a toilet having the same

Abstract

The application discloses a flushing device for a water tank with improved flushing capacity, comprising a water tank with a water storage cavity, a drain valve arranged in the water storage cavity and used for controlling water discharge of the water tank, a drain pipe connecting a drain passage of the drain valve and a bowl of a closestool, and an assisting valve with a water inlet passage and a water outlet passage, the water inlet passage being connected with a water source, and an outlet end of the water outlet passage being located in the water storage cavity; pressure water flow discharged from the water outlet passage flows to the bowl through the drain passage. The application sets the assisting valve, the water inlet passage of the assisting valve is connected with the water source, and pressure water flow discharged from the water outlet passage of the assisting valve is discharged to the bowl of the closestool, so that the pressure water flow discharged from the water outlet passage is used to assist flushing of the bowl of the closestool, and flushing effect of the flushing device for the water tank with a lower position can be effectively improved; and the pressure water flow discharged from the water outlet passage flows to the bowl through the drain passage of the drain valve, so that hidden troubles of water leakage of the water tank caused by the setting of the assisting valve can be avoided, and the modification cost is low.

Description

Technical Field

[0001] This invention relates to the field of sanitary ware technology, and in particular to a water tank flushing device for improving flushing power and a toilet having the same. Background Technology

[0002] Among existing toilet flushing devices, concealed cistern flushing systems are becoming increasingly widespread. Due to the flexible layout of bathrooms in various apartment types, concealed cisterns need to be available in a variety of sizes to adapt to different situations. Among these, low-profile concealed cistern flushing systems are favored by consumers due to their low installation height and flexible layout. Concealed cisterns typically include an inlet valve, a drain valve, a drive mechanism, and other cistern accessories. When flushing, pressing the drive mechanism activates the drain valve, and the water in the cistern is propelled towards the toilet bowl by gravity. The flushing effect of a cistern that uses water potential energy depends primarily on the level of potential energy; higher potential energy results in better flushing, while lower potential energy results in poorer flushing.

[0003] Low-profile concealed cistern flushing systems, due to their low installation height and low water level, have low water potential energy, resulting in poor flushing performance and making them unsuitable for most toilets on the market. Some existing concealed cistern flushing systems attempt to increase flushing power by enlarging the drain outlet and raising the working water level as much as possible, but the actual improvement is not significant. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a water tank flushing device for improving flushing ability and a toilet having the same.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a water tank flushing device for improving flushing capacity, comprising a water tank with a water storage cavity, a drain valve disposed in the water storage cavity and used to control the drainage of the water tank, a drain pipe connecting the drain valve to the toilet bowl, and a flushing aid valve having an inlet channel and an outlet channel, wherein the inlet channel is connected to a water source, and the outlet end of the outlet channel is located in the water storage cavity; the pressurized water flowing out of the outlet channel flows to the toilet bowl through the drain channel.

[0006] Preferably, it further includes a flow passage pipe, the inlet end of which is located inside the water storage chamber; the outlet end of which is connected to the drainage channel, or the outlet end of which passes through the drainage channel and is directly or indirectly connected to the toilet bowl; the pressurized water flowing out of the water outlet channel flows into the toilet bowl through the flow passage pipe.

[0007] Preferably, the flow passage is formed independently and then installed on the drain valve; or, the flow passage and the drain valve are formed integrally.

[0008] Preferably, the drain valve includes a base disposed on the water tank and a main valve mounted on the base. The base is provided with a drain channel. The upper opening of the drain channel forms the drain outlet of the drain valve. The drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain outlet. The lower opening of the drain channel is connected to the drain pipe.

[0009] The flow pipe is located within the water storage chamber, and its outlet end is connected to the drainage channel via the drain outlet; alternatively, the flow pipe is located within the water storage chamber, and the drainage channel has a side opening on its side wall, with the outlet end of the flow pipe connected to the drainage channel via the side opening; alternatively, the outlet end of the flow pipe passes through the drain outlet and the lower opening of the drainage channel in sequence and is directly or indirectly connected to the toilet bowl; alternatively, the drainage channel has a side opening on its side wall, and the outlet end of the flow pipe passes through the side opening and the lower opening of the drainage channel in sequence and is directly or indirectly connected to the toilet bowl.

[0010] Preferably, the main valve includes a second valve body and a valve core disposed within the second valve body and capable of moving up and down between an upward position and a downward position. The valve core includes a valve stem and a valve plate connected to the bottom end of the valve stem. The flow passage is integrally formed on the valve stem, and the outlet end of the flow passage is connected to the drainage channel through the drain port. When the valve core is in the downward position, the valve plate closes the drain port; when the valve core is in the upward position, the valve plate opens the drain port.

[0011] Preferably, the inlet end of the flow passage is located above the normal operating water level of the water storage chamber, and the inlet end of the flow passage can be connected to the water storage chamber to serve as the overflow pipe of the water tank; or, the inlet end of the flow passage is connected to the outlet end of the water outlet channel, and the flow passage is set independently of the overflow pipe of the water tank.

[0012] Preferably, when the flow pipe is used as the overflow pipe of the water tank, it further includes a water guide pipe, and the outlet end of the water outlet channel is connected to the inlet end of the water guide pipe;

[0013] The outlet end of the water guide pipe passes through the overflow pipe and is directly or indirectly connected to the toilet bowl, forming an overflow gap between the water guide pipe and the overflow pipe that connects the water storage chamber and the toilet bowl; or, the outlet end of the water guide pipe is directly connected to the overflow pipe.

[0014] Preferably, the drain pipe includes a first drain pipe and a second drain pipe disposed on the seat of the toilet, and the drain channel is connected to the toilet bowl in sequence through the first drain pipe and the second drain pipe;

[0015] The outlet end of the water guide pipe passes through the overflow pipe and is connected to the first drain pipe; or, the outlet end of the water guide pipe passes through the overflow pipe and the first drain pipe in sequence and is connected to the second drain pipe; or, the outlet end of the water guide pipe passes through the overflow pipe, the first drain pipe and the second drain pipe in sequence and is directly connected to the toilet bowl.

[0016] Preferably, the outlet end of the water guide pipe is directly connected to the overflow pipe;

[0017] It also includes a buoyancy mechanism for controlling the opening and closing of the inlet end of the overflow pipe. The buoyancy mechanism includes a first float located above the normal working water level of the water storage chamber. When the first float is in the third falling position, it controls the inlet end of the overflow pipe to close so that the water storage chamber is disconnected from the overflow pipe. When the first float is in the floating position, it controls the inlet end of the overflow pipe to open so that the water storage chamber is connected to the overflow pipe.

[0018] Alternatively, it may include a one-way valve located at the inlet end of the overflow pipe; when the water level in the storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under the water pressure in the storage chamber so that the water in the storage chamber can flow out from the overflow pipe; when the water level in the storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent the water flowing out of the outlet channel from flowing into the storage chamber through the inlet end of the overflow pipe.

[0019] Preferably, the system further includes an actuation mechanism for opening the flushing valve and the drain valve. The flushing valve is located within the water storage chamber. The water source provides pressurized water to the inlet channel. The flushing valve includes a control mechanism and a first valve body with the inlet channel and the outlet channel. The control mechanism includes a second float that can move up and down between a high position and a low position, and a limiting member movably mounted on the first valve body and movable between a limit position and a yield position. When the limiting member is in the limit position, it can limit the second float to the low position. When the limiting member is in the yield position, it can release the limitation on the second float, allowing the second float to float up to the high position. When the second float is in the high position, the control mechanism controls the inlet channel and the outlet channel to connect. When the second float is in the low position, the control mechanism controls the inlet channel and the outlet channel to disconnect, and the limiting member can reset from the yield position to the limit position. The actuation mechanism opens the flushing valve by driving the limiting member to move from the limit position to the yield position.

[0020] Alternatively, the flushing valve includes a first valve body with a water storage chamber, a piston movably disposed within the water storage chamber, and a drive mechanism pulsatingly connected to the piston. The first valve body is provided with an inlet channel and an outlet channel, both of which communicate with the water storage chamber. When the drive mechanism drives the piston to move to compress the volume of the water storage chamber, the water in the water storage chamber can be discharged from the outlet channel.

[0021] Alternatively, the flushing valve may be a solenoid valve, and the water source may provide pressurized water to the inlet channel;

[0022] Alternatively, the flushing valve may be a water pump, and the water source may be water in the water tank or water outside the water tank.

[0023] Preferably, the drain valve and the limiting member are linked and cooperate. During the process of the starting mechanism opening the drain valve, the starting mechanism drives the limiting member to move from the limiting position to the yielding position through the drain valve; or, during the process of the starting mechanism opening the drain valve, the starting mechanism directly drives the limiting member to move from the limiting position to the yielding position; or, the starting mechanism includes a first starting mechanism and a second starting mechanism that are independently arranged, the first starting mechanism is used to open the drain valve, and the second starting mechanism is used to drive the limiting member to move from the limiting position to the yielding position.

[0024] Preferably, the flushing valve further includes a water-stopping element movably disposed on the first valve body and movable between the water inlet position and the water-stopping position. The water-stopping element cooperates with the first valve body to form a back pressure chamber. A flow channel connecting the water inlet channel and the back pressure chamber is provided. A pressure relief hole is provided on the wall of the back pressure chamber. When the water-stopping element is in the water inlet position, the water inlet channel and the water outlet channel are connected. When the water-stopping element is in the water-stopping position, the water-stopping element disconnects the water inlet channel and the water outlet channel. When the second float is in the high position, the control mechanism opens the pressure relief hole to control the water-stopping element to move to the water inlet position. When the second float is in the low position, the control mechanism closes the pressure relief hole to control the water-stopping element to move to the water-stopping position.

[0025] Preferably, the control mechanism further includes a movable component movably disposed on the first valve body and cooperating with the opening and closing of the pressure relief hole, and the second float is linked to the movable component; when the second float rises to the high position, the movable component is linked to open the pressure relief hole; when the second float is at the low position, the movable component closes the pressure relief hole.

[0026] Preferably, when the second float is in the low position, the movable component can reset to the position of closing the pressure relief hole under its own weight; or, a first elastic element is provided between the movable component and the first valve body, and when the second float is in the low position, the movable component can reset to the position of closing the pressure relief hole under the action of the first elastic element; or, the movable component has a third counterweight, and when the second float is in the low position, the movable component can reset to the position of closing the pressure relief hole under the action of the third counterweight; or, an attractive magnetic structure or a repulsive magnetic structure is provided between the movable component and the first valve body, and when the second float is in the low position, the movable component can reset to the position of closing the pressure relief hole under the magnetic force of the magnetic structure.

[0027] Preferably, the low position includes a first falling position and a second falling position, the height of the first falling position being higher than the second falling position; after the water tank is drained, the second float falls to the second falling position with the water level in the water tank; during the water tank filling process, the second float rises with the water level in the water tank and is limited to the first falling position by the limiting member in the limiting position; when the second float is in the first falling position, under the action of the self-weight of the movable part or the elastic force of the first elastic part or the magnetic force of the magnetic structure or the weight of the third counterweight, the movable part presses against the first valve body and closes the pressure relief hole; when the second float is in the second falling position, under the combined action of the self-weight of the movable part or the elastic force of the first elastic part or the magnetic force of the magnetic structure or the weight of the third counterweight and the weight of the second float, the movable part presses against the first valve body and closes the pressure relief hole.

[0028] Preferably, the movable component is a rocker arm rotatably mounted on the first valve body;

[0029] One end of the swing arm is linked to the second float, the other end of the swing arm is connected to the pressure relief hole for opening and closing, and the middle part of the swing arm is rotatably connected to the first valve body; or, one end of the swing arm is linked to the second float, the other end of the swing arm is rotatably connected to the first valve body, and the middle part of the swing arm is connected to the pressure relief hole for opening and closing.

[0030] Preferably, the drain valve includes a base disposed on the water tank and a main valve mounted on the base. The base is provided with a drain channel, and the upper opening of the drain channel forms the drain port of the drain valve. The drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port. The main valve includes a second valve body and a valve core disposed on the second valve body and capable of moving up and down between a rising position and a falling position. The valve core is provided with an abutment portion. When the valve core is in the falling position, it can close the drain port. When the valve core is in the rising position, it can open the drain port. During the process of the actuation mechanism driving the valve core to rise from the falling position to the rising position, the valve core can drive the limiting member to move from the limiting position to the yielding position through the abutment portion and the abutment cooperation with the limiting member.

[0031] Preferably, the abutting part is rotatably disposed on the valve core and can rotate between a first position and a second position; when the abutting part is in the first position, the valve core can drive the limiting member to move from the limiting position to the yielding position through the abutting engagement between the abutting part and the limiting member; after the valve core drives the limiting member to move from the limiting position to the yielding position, the abutting part and the limiting member lose their abutting engagement; during the process of the valve core resetting from the rising position to the falling position, the abutting part abuts against the limiting member and rotates from the first position to the second position to yield to the limiting member, thereby allowing the valve core to continue to descend; when the valve core resets to the falling position, the abutting part can reset from the second position to the first position;

[0032] The abutting part can be reset from the second position to the first position under its own weight; or, a third elastic element is provided between the abutting part and the valve core, and the abutting part can be reset from the second position to the first position under the action of the third elastic element; or, the abutting part is equipped with a second counterweight, and the abutting part can be reset from the second position to the first position under the action of the second counterweight.

[0033] Preferably, the starting mechanism includes a button that can abut against the limiting member. When the button is pressed to open the drain valve, the button abuts against the limiting member to move the limiting member from the limiting position to the yielding position.

[0034] Preferably, the limiting member can be reset from the yielding position to the limiting position under its own weight; or, a second elastic member is provided between the limiting member and the first valve body, and the limiting member can be reset from the yielding position to the limiting position under the action of the second elastic member; or, the limiting member has a first counterweight, and the limiting member can be reset from the yielding position to the limiting position under the action of the first counterweight.

[0035] Preferably, the limiting member is rotatably or slidably disposed on the first valve body.

[0036] Preferably, the driving mechanism is an electric driving mechanism; or, the driving mechanism is linked with the drain valve, and the piston is driven by the driving mechanism to compress the volume of the water storage chamber during the process of the drain valve opening the drain outlet; or, the driving mechanism is linked with the starting mechanism for opening the drain valve, and the piston is driven by the driving mechanism to compress the volume of the water storage chamber during the process of the starting mechanism opening the drain valve.

[0037] Preferably, the water storage chamber is provided with a water inlet valve, the water inlet of the water inlet valve is connected to the water source, and the water outlet of the water inlet valve is connected to the water inlet channel through a water supply pipe to replenish the water storage chamber.

[0038] Preferably, the outlet of the water inlet channel and the inlet of the water outlet channel are both located at the top of the water storage chamber.

[0039] Preferably, the flushing valve is located inside the water storage chamber, and the flushing valve is connected to the drain valve.

[0040] In addition, the present invention also provides a toilet, including a seat with a urinal and a water tank flushing device for improving flushing ability as described in any of the above claims.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] This invention incorporates a flushing aid valve. The inlet channel of the flushing aid valve is connected to a water source, and the pressurized water flowing from the outlet channel of the flushing aid valve is discharged into the toilet bowl. This utilizes the pressurized water flow from the outlet channel to assist in flushing the toilet bowl, effectively improving the flushing effect of existing toilet bowl flushing devices with low-positioned tanks. Furthermore, the pressurized water flow from the outlet channel flows into the toilet bowl through the drain valve's drain channel. On one hand, this eliminates the need for additional through-holes in the tank wall for pipes to guide water from the outlet channel to the toilet bowl, avoiding the risk of tank leakage caused by adding pipes through the tank due to the flushing aid valve. On the other hand, it facilitates the replacement of the ordinary drain valve in existing toilet bowl flushing devices with the drain valve and flushing aid valve of this invention to improve the flushing effect, making modification or repair easy and cost-effective. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural diagram of the hidden water tank behind the front wall in Embodiment 1 of the present invention;

[0044] Figure 2 This is a three-dimensional structural diagram of the drain valve and flushing valve according to Embodiment 1 of the present invention (in the figure, the limiting component is located at the limiting position, the second float is located at the low position (specifically located at the first falling position), the valve core is located at the falling position, and the abutment part is located at the first position).

[0045] Figure 3 This is a cross-sectional view of the drain valve and flushing valve according to Embodiment 1 of the present invention (in the figure, the water stop is located in the water stop position, the limiting member is located in the limiting position, the second float is located in the low position (specifically located in the first falling position), and the valve core is located in the falling position).

[0046] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0047] Figure 5 This is a schematic diagram of the usage state of Embodiment 1 of the present invention. Figure 1 (In the diagram, the limiting component is in the yielding position, the second float rises to the high position, the valve core is in the rising position, and the abutment part is in the first position.)

[0048] Figure 6 This is a schematic diagram of the usage state of Embodiment 1 of the present invention. Figure 2 (In the diagram, the limiting component is in the yielding position, the second float rises to the high position, and the valve core is in the rising position.)

[0049] Figure 7 This is a schematic diagram of the usage state of Embodiment 1 of the present invention. Figure 3 (In the diagram, the limiting component is in the limiting position, the second float is in the low position (specifically in the second falling position), and the valve core is in the rising position and about to fall.)

[0050] Figure 8 This is a schematic diagram of the usage state of Embodiment 1 of the present invention. Figure 4 (In the diagram, the limiting component is in the limiting position, the second float is in the low position (specifically, in the second falling position), the valve core is in the process of descending, and the contact part is in the second position).

[0051] Figure 9 This is a three-dimensional structural diagram of the drain valve and flushing valve according to Embodiment 2 of the present invention (the limiting component is located in the limiting position, the second float is located in the low position (specifically in the first falling position), and the valve core is located in the falling position).

[0052] Figure 10 yes Figure 9 A magnified view of a portion of point B in the middle;

[0053] Figure 11 This is an exploded structural diagram of Embodiment 2 of the present invention;

[0054] Figure 12 This is a schematic diagram of the usage state of Embodiment 2 of the present invention. Figure 1 (In the diagram, the limiting component is in the yielding position, the second float rises to the high position, and the valve core is in the rising position.)

[0055] Figure 13 This is a schematic diagram of the usage state of Embodiment 2 of the present invention. Figure 2 (In the diagram, the limiting component is in the yielding position, the second float rises to the high position, and the valve core is in the rising position.)

[0056] Figure 14 This is a schematic diagram of the usage state of Embodiment 2 of the present invention. Figure 3 (In the diagram, the limiting component is in the limiting position, the second float is in the low position (specifically in the second falling position), and the valve core is in the rising position and is about to fall or the valve core is already in the falling position).

[0057] Figure 15 This is a schematic diagram of the usage state of Embodiment 2 of the present invention. Figure 4 (In the diagram, the limiting component is in the limiting position, the second float is in the low position (specifically in the second falling position), and the valve core is in the rising position and is about to fall or the valve core is already in the falling position).

[0058] Figure 16 This is a three-dimensional structural diagram of the hidden water tank behind the front wall in Embodiment 3 of the present invention;

[0059] Figure 17 This is a three-dimensional structural diagram of the drain valve and flushing valve according to Embodiment 3 of the present invention;

[0060] Figure 18 This is a cross-sectional view of the drain valve and flushing valve according to Embodiment 3 of the present invention;

[0061] Figure 19This is a three-dimensional structural diagram of the drain valve and flushing valve according to Embodiment 4 of the present invention.

[0062] The annotations in the attached figures are explained as follows:

[0063] 1-Water tank, 11-Water storage chamber, 2-Flow pipe, 21-Overflow gap, 3-Drain valve, 31-Second valve body, 32-Valve core, 321-Valve stem, 322-Valve plate, 33-Base, 331-Drainage channel, 4-Flush valve, 411-Second float, 412-Moving part, 413-Limiting part, 414-First elastic part, 415-Sealing gasket, 416-Screw, 42-First valve body, 421-Inlet channel, 422-Outlet channel, 423-Water storage chamber, 43-Water stop, 44-Back pressure chamber, 45-Pressure relief hole, 46-Piston, 47-Drive mechanism, 5-First drain pipe, 6-Water guide pipe, 7-Abutting part, 8-Inlet valve, 9-Water supply pipe, 10-Overflow pipe, 20-Button. Detailed Implementation

[0064] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the water tank flushing device for improving flushing capacity and the toilet having the same are not limited to the embodiments of the present invention.

[0065] Example 1

[0066] Please see Figures 1 to 8As shown, a water tank flushing device for improving flushing capacity according to this embodiment includes a water tank 1, a drain valve 3, a flushing aid valve 4, and a drain pipe. The water tank 1 has a water storage chamber 11. The drain valve 3 is located in the water storage chamber 11 and is used to control the drainage of the water tank 1. The flushing aid valve 4 has an inlet channel 421 and an outlet channel 422. The drain channel 331 of the drain valve 3 is connected to the toilet bowl (not shown in the figure) through the drain pipe. The inlet channel 421 is connected to a water source (not shown in the figure). The outlet end of the outlet channel 422 is located in the water storage chamber 11. The pressurized water flowing out of the outlet channel 422 flows to the toilet bowl through the drain channel 331. In this embodiment, a flushing aid valve 4 is provided. The inlet channel 421 of the flushing aid valve 4 is connected to a water source, and the pressurized water flowing out of the outlet channel 422 of the flushing aid valve 4 is discharged into the toilet bowl. In this way, the pressurized water flowing out of the outlet channel 422 helps to flush the toilet bowl, which can effectively improve the flushing effect of existing water tank flushing devices with low water tank positions. Moreover, the pressurized water flowing out of the outlet channel 422 flows into the toilet bowl through the drain channel 331 of the drain valve 3. On the one hand, the water tank flushing device does not need to open a through hole in the water tank wall for the pipe to guide the water from the outlet channel to the toilet bowl, which can avoid the risk of water tank leakage caused by adding a pipe through the water tank due to the setting of the flushing aid valve. On the other hand, it is easy to replace the ordinary drain valve of the existing water tank flushing device with the drain valve and flushing aid valve of this invention to improve the flushing effect, which is convenient for modification or repair and has low modification or repair costs.

[0067] Please see Figures 1 to 8 As shown, in this embodiment, a flow pipe 2 is also provided in the water storage chamber 11. That is, the inlet and outlet ends of the flow pipe 2 are both located in the water storage chamber 11. The outlet end of the flow pipe 2 is connected to the drainage channel 331. The pressurized water flowing out of the water outlet channel 422 flows into the toilet bowl through the flow pipe 2 and the drainage channel 331. There is no need to open a hole on the wall of the water tank 1 for the flow pipe 2 to pass through, thereby avoiding the risk of water leakage in the water tank 1 due to the setting of the flushing valve 4.

[0068] Please see Figures 1 to 8 As shown, in this embodiment, the flow pipe 2 and the drain valve 3 are integrally formed; the drain valve 3 includes a base 33 set on the bottom wall of the water tank 1 and a main valve mounted on the base 33. The base 33 is provided with a drain channel 331. The upper opening of the drain channel 331 forms the drain port of the drain valve 3 (not shown in the figure). The drain valve 3 connects or disconnects the water storage chamber 11 and the drain channel 331 by opening or closing the drain port. The lower opening of the drain channel 331 is connected to the drain pipe; the outlet end of the flow pipe 2 is connected to the drain channel 331 through the drain port, and then the flow pipe 2 is connected to the toilet bowl in sequence through the drain channel 331 and the drain pipe.

[0069] Specifically, in this embodiment, the main valve includes a second valve body 31 mounted on the base 33 and a valve core 32 disposed within the second valve body 31 and capable of moving up and down between the rising and falling positions. The valve core 32 includes a valve stem 321 and a valve plate 322 connected to the bottom end of the valve stem 321. The valve plate 322 cooperates with the opening and closing of the drain port of the drain valve 3. The flow passage 2 is integrally formed on the valve stem 321 of the drain valve 3, thereby making the structure of the drain valve 3 more compact. Furthermore, the flow passage 2 (valve stem 321) is arranged vertically in the second valve body 31 of the drain valve 3, which can reduce the turning of the water guide pipe 6 described below and help avoid the loss of kinetic energy of the water flow. When the valve core 32 is in the falling position, the valve plate 322 closes the drain port, thereby closing the drain channel 331 to disconnect the water storage chamber 11 and the drain channel 331. When the valve core 32 is in the rising position, the valve plate 322 opens the drain port, thereby opening the drain channel 331 to connect the water storage chamber 11 and the drain channel 331. Of course, in other embodiments, a side opening can be provided on the side wall of the drainage channel, and the outlet end of the flow pipe can be connected to the drainage channel through the side opening, so that the pressurized water flowing out of the water outlet channel can flow into the toilet bowl through the flow pipe and the drainage channel. In this case, the flow pipe can be integrally formed on the base of the drain valve.

[0070] Please see Figures 1 to 8 As shown, in this embodiment, the inlet end of the flow passage pipe 2 is located above the normal working water level of the water storage chamber 11, and the inlet end of the flow passage pipe 331 can be connected to the upper part of the water storage chamber 11 to serve as the overflow pipe of the water tank 1. When the water level in the water storage chamber 11 is higher than its normal working water level, the water in the water storage chamber 11 can be discharged through the overflow pipe (i.e., the flow passage pipe 2), thereby realizing the overflow function of the water tank 1. In the specific implementation of this embodiment, the overflow pipe provided on an existing ordinary drain valve can be directly used as the flow passage pipe 2. In this way, the existing drain valve with an overflow pipe can be directly used as the drain valve of this invention without modifying the drain valve, which is low in cost.

[0071] This embodiment also includes a water guide pipe 6. The outlet end of the water outlet channel 422 is connected to the inlet end of the water guide pipe 6. The outlet end of the water guide pipe 6 passes through the overflow pipe (i.e., the flow pipe 2) and is directly or indirectly connected to the toilet bowl, so that the pressurized water flowing out of the water outlet channel 422 flows to the toilet bowl through the overflow pipe (i.e., the flow pipe 2). The water guide pipe 6 is fixed relative to the base 33 of the drain valve 3. The pipe wall of the water guide pipe 6 and the pipe wall of the overflow pipe 2 form an overflow gap 21 that connects the water storage chamber 11 and the toilet bowl.

[0072] Specifically, in this embodiment, the overflow gap 21 connects the water storage chamber 11 and the drainage channel 331, and further connects the water storage chamber 11 and the toilet bowl; when the water level in the water storage chamber 11 is higher than its normal working water level, the water in the water storage chamber 11 flows out through the overflow gap 21 into the drainage channel 331 and finally flows into the toilet bowl through the drain pipe.

[0073] Please see Figure 1 As shown, in this embodiment, the drain pipe includes a first drain pipe 5 and a second drain pipe (not shown in the figure, which can be integrally formed with the toilet seat or independently formed) installed on the toilet seat. The lower opening of the drain channel 331 is connected to the toilet bowl through the first drain pipe 5 and the second drain pipe in sequence. The outlet end of the water guide pipe 6 passes through the overflow pipe (i.e., the flow pipe 2) and is connected to the first drain pipe 5 (i.e., the outlet end of the water guide pipe 6 is located in the first drain pipe 5), so that the outlet end of the water guide pipe 6 is indirectly connected to the toilet bowl through the first drain pipe 5 and the second drain pipe. This allows the pressurized water flow from the outlet channel 422 of the flushing valve 4 and the water flow discharged from the water tank 1 through the drain channel 331 to converge in the first drain pipe 5 and flow together into the toilet bowl, thereby increasing the flushing force of the water flow towards the toilet bowl and improving the flushing effect. Of course, in other embodiments, the outlet end of the water pipe can be configured to pass through the overflow pipe and the first drain pipe in sequence and then connect to the second drain pipe, so that the outlet end of the water pipe is indirectly connected to the toilet through the second drain pipe; or, the outlet end of the water pipe can pass through the overflow pipe, the first drain pipe and the second drain pipe in sequence and then directly connect to the toilet.

[0074] Please see Figures 2 to 8As shown, in this embodiment, an activation mechanism for opening the flushing valve 4 and the drain valve 3 is also included. The flushing valve 4 is located in the water storage chamber 11 and is connected to the drain valve 3. Pressurized water is supplied to the inlet channel 421. The water source can be municipal tap water. The flushing valve 4 includes a control mechanism and a first valve body 42 with an inlet channel 421 and an outlet channel 422. The control mechanism includes a second float 411 that can move up and down between a high position and a low position, and a limiting member 413 that is movably mounted on the first valve body 42 and can move between a limit position and a yield position. The second float 411 rises or falls with the water level in the water storage chamber 11. When the limiting member 413 is in the limit position, it can limit the second float 411 to the low position (the second float...). When the second float 411 is in the low position, the movable part 412 (described below) closes the pressure relief hole 45; when the limiting part 413 is in the yielding position, it can release the limiting of the second float 411, allowing the second float 411 to float to the high position (when the second float 411 is in the high position, the movable part 412 (described below) opens the pressure relief hole 45); when the second float 411 is in the high position, the control mechanism controls the inlet channel 421 and the outlet channel 422 to connect; when the second float 411 is in the low position, the control mechanism controls the inlet channel 421 and the outlet channel 422 to disconnect. At this time, the limiting part 413 can be reset from the yielding position to the limiting position; the starting mechanism drives the limiting part 413 to move from the limiting position to the yielding position to realize the opening of the flushing valve 4. The flushing valve 4 in this embodiment has a simple overall structure, the control mechanism can reliably control the opening and closing of the flushing valve 4, and the flushing valve 4 is easy to manufacture.

[0075] Specifically, in this embodiment, the starting mechanism directly drives the drain valve 3 to open. The drain valve 3 and the limiting member 413 are linked and cooperate. During the process of the starting mechanism driving the drain valve 3 to open the drain channel 331 to open the drain valve 3, the starting mechanism drives the limiting member 413 from the limiting position to the yielding position through the drain valve 3 (that is, the starting mechanism indirectly drives the flushing valve 4 to open through the drain valve 3). The limiting member 413 is rotatably mounted on the first valve body 42. When the second float 411 is in the low position, the limiting member 413 can return to the limiting position from the yielding position under its own gravity. Of course, in other embodiments, the limiting member can also be slidably mounted on the first valve body; or a second elastic member can be provided between the limiting member and the first valve body, and the limiting member can return to the limiting position from the yielding position under the action of the second elastic member; or the limiting member has a first counterweight, and the limiting member can return to the limiting position from the yielding position under the action of the first counterweight.

[0076] Please see Figures 2 to 8As shown, in this embodiment, the flushing valve 4 further includes a water-stopping element 43 movably disposed on the first valve body 42 and movable between the water inlet position and the water-stopping position. The water-stopping element 43 and the first valve body 42 cooperate to form a back pressure chamber 44. A flow channel (not shown in the figure) connecting the water inlet channel 421 and the back pressure chamber 44 is provided between them. A pressure relief hole 45 is provided on the cavity wall of the back pressure chamber 44. When the water-stopping element 43 is in the water inlet position, the water inlet channel 421 and the water outlet channel 422 are connected. When the water-stopping element 43 is in the water-stopping position, it disconnects the water inlet channel 421 and the water outlet channel 422. When the second float 411 is in the high position, the control mechanism opens the pressure relief hole 45 to control the water-stopping element 43 to move to the water inlet position, thereby controlling the water inlet channel 421 and the water outlet channel 422 to connect. When the second float 411 is in the low position, the control mechanism closes the pressure relief hole 45 to control the water-stopping element 43 to move to the water-stopping position, thereby controlling the water inlet channel 421 and the water outlet channel 422 to disconnect.

[0077] Specifically, in this embodiment, the water-stopping element 43 is a water-stopping pad, and the water-stopping element 43 is provided with a flow hole (not shown in the figure). The flow hole forms the flow channel, and the water in the water inlet channel 421 flows into the back pressure chamber 44 through the flow hole. In this embodiment, the flushing valve 4 is controlled to open and close using the principle of water inlet based on pressure difference. When the control mechanism opens the pressure relief hole 45, the water-stopping element 43 moves to the water inlet position under the water pressure of the water inlet channel 421, and the water inlet channel 421 and the water outlet channel 422 are connected, thereby realizing the water inlet of the flushing valve 4. When the control mechanism closes the pressure relief hole 45, the water-stopping element 43 moves to the water-stopping position under the back pressure of the back pressure chamber 44, and the water-stopping element 43 cuts off the connection between the water inlet channel 421 and the water outlet channel 422, thus realizing the water stop of the flushing valve 4. In this embodiment, the working principle of the flushing valve 4 for stopping or introducing water is the same as that of the inlet valve used to control the water inlet of the toilet tank in existing toilet tanks. This is a well-known technology in the field and will not be described in detail here.

[0078] Please see Figures 2 to 8 As shown, in this embodiment, the control mechanism further includes a movable member 412 movably mounted on the first valve body 42 and cooperating with the opening and closing of the pressure relief hole 45. The second float 411 is linked to the movable member 412. When the second float 411 rises to the high position, the movable member 412 opens the pressure relief hole 45. When the second float 411 is in the low position, the movable member 412 closes the pressure relief hole. Specifically, in this embodiment, a first elastic member 414 is provided between the movable member 412 and the first valve body 42. The first elastic member 414 is specifically a spring. When the second float 411 is in the low position, the movable member 412 can be reset to the position of closing the pressure relief hole 45 under the action of the first elastic member 414.

[0079] Please see Figures 2 to 8As shown, in this embodiment, the low position includes a first falling position and a second falling position, with the height of the first falling position being higher than that of the second falling position. After the water tank 1 finishes draining, the second float 411 falls to the second falling position along with the water level of the water tank 1. During the water tank 1 filling process, the second float 411 rises with the water level of the water tank 1 and is limited to the first falling position by the limiting member 413 which is in the limiting position. When the second float 411 is in the first falling position (at this time, the second float 411 has not completely fallen and is still floating due to the buoyancy of the water), under the action of the elastic force of the first elastic member 414, the movable member 412 presses against the first valve body 42 and closes the pressure relief hole 45. When the second float 411 is in the second falling position (at this time, the second float 411 has completely fallen), under the combined action of the elastic force of the first elastic member 414 and the gravity of the second float 411, the movable member 412 presses against the first valve body 42 and closes the pressure relief hole 45. In this embodiment, after the second float 411 descends to the first falling position, as the water level in the water storage chamber 11 decreases, the second float 411 continues to descend to the second falling position, so that the limiting member 413 can be better reset to the limiting position.

[0080] Specifically, in this embodiment, the movable component 412 is a rocker arm rotatably mounted on the first valve body 42. One end of the rocker arm is linked to the second float 411, and the other end of the rocker arm is connected to the pressure relief hole 45 for opening and closing. The middle part of the rocker arm is rotatably connected to the first valve body 42. In this embodiment, the control mechanism also includes a screw 416. The second float 411 is specifically connected to one end of the rocker arm (i.e., the movable component 412) through the screw 416. When the limiting component 413 is in the limiting position, it can engage with the top of the screw 416 to limit the second float 411 to the first falling position. The other end of the rocker arm is provided with a sealing gasket 415 that can engage with the pressure relief hole 45 for opening and closing. The sealing gasket 415 and the first elastic component 414 are located at the same end of the rocker arm 412. By providing a sealing gasket 415 on the rocker arm that can engage with the pressure relief hole 45 for opening and closing, the rocker arm can more reliably engage with the pressure relief hole 45 for opening and closing. Of course, in other embodiments, the movable component can also be slidably mounted on the first valve body.

[0081] Please see Figures 1 to 8As shown, in this embodiment, the valve core 32 is provided with an abutment portion 7. During the process of the starting mechanism driving the valve core 32 to rise from the descending position to the rising position (that is, during the process of the drain valve 3 opening the drain channel 331), the valve core 32 can drive the limiting member 413 to move from the limiting position to the yielding position through the abutment portion 7 and the abutment cooperation with the limiting member 413 to release the limiting of the second float 411. Thus, during the process of the starting mechanism driving the valve core 32 to open the drain channel 331 to open the drain valve 3, the starting mechanism drives the limiting member 413 to move from the limiting position to the yielding position through the valve core 32 of the drain valve 3, so that the second float 411 can float to a high position to drive the swing arm to swing and open the pressure relief hole 45, so that the water inlet channel 421 and the water outlet channel 422 are connected, thereby realizing that when the drain valve 3 starts to drain, the flushing valve 4 can be opened simultaneously to flush the toilet.

[0082] Specifically, in this embodiment, the abutment portion 7 is rotatably disposed on the valve core 32 and can rotate between a first position and a second position. The abutment portion 7 is rotatably disposed at the top end of the valve stem 321. When the abutment portion 7 is in the first position, the valve core 32 can drive the limiting member 413 from the limiting position to the yielding position through the abutment engagement between the abutment portion 7 and the limiting member 413. After the valve core 32 drives the limiting member 413 from the limiting position to the yielding position, the abutment portion 7 and the limiting member 413 lose their abutment engagement. During the process of the valve core 32 resetting from the rising position to the falling position, the abutment portion 7 abuts against the limiting member 413 and rotates from the first position to the second position to yield to the limiting member 413, so that the valve core 32 can continue to descend and smoothly reset to the falling position. When the valve core 32 resets to the falling position, the abutment portion 7 can reset from the second position to the first position. Specifically, in this embodiment, the abutment portion 7 can reset from the second position to the first position under its own gravity. Of course, in other embodiments, a third elastic element may be provided between the abutting part and the valve core, so that the abutting part can be reset from the second position to the first position under the action of the third elastic element; or, the abutting part may be equipped with a second counterweight, so that the abutting part can be reset from the second position to the first position under the action of the second counterweight.

[0083] In this embodiment, please refer to Figure 1 As shown, a water inlet valve 8 is provided inside the water storage chamber 11, and the water inlet of the water inlet valve 8 is also connected to the water source.

[0084] This embodiment also provides a toilet (not shown in the figure), including a seat with a toilet bowl and a water tank flushing device for improving flushing ability as described in any of the above embodiments.

[0085] The working principle of this embodiment is briefly described as follows:

[0086] In its initial state (i.e., under normal conditions), the water storage chamber 11 contains water, such as... Figures 2 to 4As shown, the valve core 32 of the drain valve 3 is in the descending position to close the drain outlet (i.e., close the drain channel 331), the drain valve 3 stops the water, the abutment part 7 is in the first position, the limiting member 413 is in the limiting position, and the second float 411 is in the low position (specifically in the first falling position). At this time, the second float 411 has not completely fallen. The second float 411 is still in the floating state due to the buoyancy of the water. However, the second float 411 is kept in the first falling position due to the limiting of the limiting member 413. Under the action of the elastic force of the first elastic member 414, the sealing gasket 415 on the moving member 412 presses against the first valve body 42 and closes the pressure relief hole 45. The water-stopping member 43 moves to the water-stopping position under the back pressure of the back pressure chamber 44 to cut off the connection between the water inlet channel 421 and the water outlet channel 422. The flushing valve 4 stops the water.

[0087] During flushing, the valve core 32 of the drain valve 3 is driven to rise from the lowered position by the actuation mechanism to open the drain outlet (i.e., open the drain channel 331) and thus open the drain valve 3, thereby controlling the water tank 1 to drain; during the rising process of the valve core 32, such as Figure 5 and Figure 6 As shown, the abutting part 7 on the valve core 32 abuts against the limiting member 413 to drive the limiting member 413 to rotate from the limiting position to the yielding position. At this time, the limiting member 413 releases the limiting position on the second float 411, and the second float 411 floats up under the buoyancy of the water. The second float 411 drives one end of the movable member 412 to lift upward through the screw 416, so that the sealing gasket 415 on the other end of the movable member 412 opens the pressure relief hole 45, the first elastic member 414 is compressed, and after the second float 411 rises, it is driven by the screw 416 to lift one end of the movable member 412 upward, so that the sealing gasket 415 on the other end of the movable member 412 opens the pressure relief hole 45, the first elastic member 414 is compressed, and the second float 411 rises and is driven by the screw 416 to lift one end of the movable member 412. 6. The limiting member 413 is held in the yielding position, and the water-stopping member 43 moves to the water inlet position under the water pressure of the water inlet channel 421. The water inlet channel 421 and the water outlet channel 422 are connected, so that when the drain valve 3 opens, the flushing valve 4 is also opened. This allows the water flow discharged from the drain channel 331 of the drain valve 3 and the water flow discharged from the water outlet channel 422 of the flushing valve 4 to converge in the first drain pipe 5 and flow together into the toilet bowl to flush the toilet bowl at the same time, which greatly improves the flushing force and the flushing effect; among which, such as Figure 5 As shown, after the valve core 32 drives the limiting member 413 to rotate from the limiting position to the yielding position, the abutting part 7 loses its abutting cooperation with the limiting member 413, and the valve core 32 continues to rise to the rising position to complete the opening of the drain valve 3.

[0088] When the water level in the water storage chamber 11 drops to a certain height, the second float 411 begins to descend first. After the second float 411 descends to the first falling position, as the water level in the water tank 1 continues to drop, such as... Figure 7As shown, after the water tank 1 finishes draining, the second float 411 descends to the second falling position. At this time, the second float 411 is completely lowered and is no longer subject to the buoyancy of the water. The limiting member 413 returns to the limiting position from the yielding position under its own weight, so as to prevent the second float 411 from floating to a high position when the water tank 1 is filled with water again. At the same time, the second float 411 is linked to the rotating member 412, so that the sealing gasket 415 on the moving member 412 closes the pressure relief hole 45 under the combined action of the weight of the second float 411 and the elastic force of the first elastic member 414, and the flushing valve 4 stops the water flow. After the second float 411 descends to the second falling position, the valve core 32 begins to descend. During the process of the valve core 32 returning from the rising position to the falling position, as Figure 8 As shown, the abutting part 7 abuts against the limiting member 413 and rotates from the first position to the second position to make way for the limiting member 413, so that the valve core 32 can be smoothly reset to the lowered position to close the drain outlet of the drain valve 3; after the valve core 32 is reset to the lowered position (i.e. the drain valve 3 closes the drain outlet), the abutting part 7 rotates from the second position to the first position under its own weight; then, the water inlet valve 8 is opened to replenish the water storage chamber 11. As the water level in the water storage chamber 11 rises, the second float 411 floats from the second falling position to the first falling position due to the buoyancy of the water, and the limiting member 413 in the limiting position limits the second float 411 to the first falling position, and the water tank flushing device returns to the initial state.

[0089] In other embodiments, the outlet end of the flow pipe can be configured to pass through the drainage channel and be directly or indirectly connected to the toilet bowl. This also enables the pressurized water flowing out of the outlet channel to flow to the toilet bowl through the drainage channel. Specifically, the outlet end of the flow pipe can be configured to pass through the drain outlet and the lower opening of the drainage channel in sequence, and then be directly connected to the toilet bowl or indirectly connected to the toilet bowl through the drain pipe. Alternatively, a side opening can be provided on the side wall of the drainage channel, and the outlet end of the flow pipe can pass through the side opening and the lower opening of the drainage channel in sequence, and then be directly connected to the toilet bowl or indirectly connected to the toilet bowl through the drain pipe.

[0090] In other embodiments, it can also be configured such that: when the second float is in a low position, the movable part can be reset to the position of closing the pressure relief hole under its own gravity; and further configured such that: when the second float is in the first falling position, the movable part presses against the first valve body and closes the pressure relief hole under its own gravity; when the second float is in the second falling position, the movable part presses against the first valve body and closes the pressure relief hole under the combined action of the movable part's own gravity and the gravity of the second float.

[0091] In other embodiments, it can also be configured such that: the movable part has a third counterweight, and when the second float is in a low position, the movable part can be reset to the position of closing the pressure relief hole under the action of the third counterweight; and further configured such that: when the second float is in the first falling position, under the gravity of the third counterweight, the movable part presses against the first valve body and closes the pressure relief hole; when the second float is in the second falling position, under the combined action of the gravity of the third counterweight and the gravity of the second float, the movable part presses against the first valve body and closes the pressure relief hole.

[0092] In other embodiments, it can also be configured such that: an attractive magnetic structure or a repulsive magnetic structure is provided between the movable member and the first valve body, and when the second float is in the low position, the movable member can be reset to the position of closing the pressure relief hole under the magnetic force of the magnetic structure; and further configured such that: when the second float is in the first falling position, the movable member presses against the first valve body and closes the pressure relief hole under the magnetic force of the magnetic structure; when the second float is in the second falling position, the movable member presses against the first valve body and closes the pressure relief hole under the combined action of the magnetic force of the magnetic structure and the gravity of the second float.

[0093] In other embodiments, the abutment portion may be fixedly disposed at the top of the valve stem instead of being rotatably disposed at the top of the valve stem. In this way, when the valve core is in the rising position, the abutment portion always abuts against the limiting member, so that the limiting member is kept in the yielding position; after the valve core is reset to the falling position, the limiting member can be reset to the limiting position under its own gravity.

[0094] Example 2

[0095] This embodiment is basically the same as Embodiment 1, except that:

[0096] Please see Figures 9 to 15 As shown, in this embodiment, the flow pipe is independently formed and then installed on the drain valve 3, specifically on the base 33 of the drain valve 3. A side opening (not shown in the figure) is provided on the side wall of the drain channel 331. The outlet end of the flow pipe is connected to the drain channel 331 through this side opening, and the pressurized water flowing out of the water outlet channel 422 flows into the toilet bowl through the flow pipe, so that the pressurized water flowing out of the water outlet channel 422 can flow into the toilet bowl through the drain channel 331. Specifically, in this embodiment, the outlet end of the flow pipe extends into the drain channel 331 after passing through the side opening.

[0097] Please see Figures 9 to 15 As shown, in this embodiment, the inlet end of the flow pipe is connected to the outlet end of the water outlet channel 422, so that the pressurized water flowing out of the water outlet channel 422 can flow into the toilet bowl through the flow pipe. The flow pipe and the overflow pipe 10 of the water tank 1 are set independently. The overflow pipe 10 is installed on the base of the drain valve 3, and the outlet end of the overflow pipe 10 is directly connected to the drain channel 331.

[0098] Please see Figures 9 to 15 As shown, in this embodiment, one end of the swing rod (i.e., the movable part 412) is linked with the second float 411, the other end of the swing rod is rotatably connected to the first valve body 42, the middle part of the swing rod is in opening and closing cooperation with the pressure relief hole 45, and the sealing gasket 415 is provided in the middle part of the swing rod; one end of the swing rod (i.e., the movable part 412) is specifically linked with the second float 411 through the screw 416.

[0099] Please see Figures 9 to 15 As shown, in this embodiment, the starting mechanism drives the valve core 32 and the limiting member 413 of the drain valve 3 to move respectively. During the process of the starting mechanism driving the drain valve 3 to open the drain channel 331 to open the drain valve 3, the starting mechanism directly drives the limiting member 413 from the limiting position to the yielding position. Specifically, in this embodiment, the starting mechanism includes a button 20 that can abut against the limiting member 413. The button 20 is linked with the valve core 32. During the process of pressing the button 20 to link the valve core 32 from the lower position to the upper position to open the drain valve 3, the button 20 abuts against the limiting member 413 to drive the limiting member 413 from the limiting position to the yielding position, thereby realizing that the starting mechanism directly drives the limiting member 413 from the limiting position to the yielding position during the process of opening the drain valve 3; when the valve core 32 rises to the upper position, the button 20 can automatically reset.

[0100] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0101] In other embodiments, the actuation mechanism may include a first actuation mechanism (not shown) and a second actuation mechanism (not shown) that are independently configured. The first actuation mechanism is used to drive the drain valve to open the drain channel to activate the drain valve, and the second actuation mechanism is used to drive the limiting member to move from the limiting position to the yielding position. The advantage of this design is that when the first and second actuation mechanisms are driven simultaneously, the flushing assist valve can be used to assist flushing while the drain valve controls the water tank to drain. When only the first actuation mechanism is driven, the flushing assist valve does not function, and only the water discharged from the water tank controlled by the drain valve is used to flush the toilet. The user can choose whether to use the flushing assist valve as needed.

[0102] Example 3

[0103] This embodiment is basically the same as Embodiment 1, except that:

[0104] Please see Figures 9 to 11As shown, in this embodiment, the flushing aid valve 4 includes a first valve body 42 with a water storage chamber 423, a piston 46 movably disposed within the water storage chamber 423, and a drive mechanism 47 pulsatorically connected to the piston 46. The first valve body 42 is provided with an inlet channel 421 and an outlet channel 422, both of which are connected to the water storage chamber 423. When the drive mechanism 47 drives the piston 46 to move and compress the volume of the water storage chamber 423, the water in the water storage chamber 423 can be discharged from the outlet channel 422. In this embodiment, the flushing aid valve 4, by driving the piston 46 to move through the drive mechanism 47 to compress the volume of the water storage chamber 423, allows the water in the water storage chamber 423 to be discharged from the outlet channel 422, so that the flushing aid valve 4 can assist flushing without being affected by the water pressure of the water source, making the flushing more stable.

[0105] In this embodiment, the drive mechanism 47 is an electric drive mechanism. When the drain valve 3 starts to drain, the electric control drive mechanism 47 operates, driving the piston 46 to compress the volume of the water storage chamber 423. This causes the piston 46 to push the water in the water storage chamber 423 out of the water outlet channel 422 at a certain pressure, assisting the water tank 1 in flushing and improving the flushing effect. Of course, in other embodiments, the drive mechanism can also be configured to work in conjunction with the drain valve, specifically with the valve core of the drain valve. During the process of the drain valve opening the drain channel, the drive mechanism drives the piston to move to compress the volume of the water storage chamber. Alternatively, the drive mechanism can be configured to work in conjunction with the starting mechanism that opens the drain valve. During the process of the starting mechanism opening the drain valve, the drive mechanism drives the piston to move to compress the volume of the water storage chamber. This also achieves the same effect of opening the drain valve and simultaneously controlling the flushing valve to open, so that the water flow discharged from the water tank through the drain valve's drain channel and the water flow discharged from the flushing valve's outlet channel simultaneously flush the toilet bowl.

[0106] Please see Figure 9 As shown, in this embodiment, the outlet of the inlet valve 8 is connected to the inlet channel 421 of the flushing valve 4 via the water supply pipe 9, thereby replenishing the water storage chamber. That is, the water supply channel 421 is connected to the water source through the inlet valve 8; when water enters the inlet valve 8, water is replenished to the water storage chamber 423 through the water supply pipe 9; please refer to Figure 11 As shown, in this embodiment, the outlet of the water inlet channel 421 and the inlet of the water outlet channel 422 are both located at the top of the water storage chamber 423.

[0107] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0108] Example 4

[0109] This embodiment is basically the same as Embodiment 1, except that:

[0110] Please see Figure 12As shown, in this embodiment, the flushing valve 4 is a solenoid valve. The water source provides pressurized water to the water inlet channel 421. The water source can be municipal tap water. At the same time as the drain valve 3 starts to drain, the flushing valve 4 is opened to assist in flushing the toilet bowl. This allows the water flow discharged from the water tank 1 through the drain channel 331 of the drain valve 3 and the water flow discharged from the outlet channel 422 of the flushing valve 4 to flush the toilet bowl simultaneously.

[0111] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0112] Example 5

[0113] This embodiment is basically the same as Embodiment 1, except that:

[0114] In this embodiment (not shown), the flushing aid valve is a water pump, and the water source is water from the tank or water from outside the tank. Simultaneously with the drain valve activating to drain water, the water pump is activated to assist in flushing the toilet bowl, allowing the water flowing from the tank through the drain valve's drain channel and the water flowing from the flushing aid valve's outlet channel to flush the toilet bowl simultaneously.

[0115] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0116] Example 6

[0117] This embodiment is basically the same as Embodiment 1, except that:

[0118] In this embodiment (not shown), the outlet end of the water guide pipe is directly connected to the overflow pipe (i.e., the flow pipe), so that the pressurized water flowing out of the outlet channel flows to the toilet bowl through the overflow pipe (i.e., the flow pipe). The water guide pipe is specifically a flexible hose. It also includes a buoyancy mechanism for controlling the opening and closing of the inlet end of the overflow pipe. The outlet channel of the flushing valve is connected to the overflow pipe through the water guide pipe, so that the water flowing out of the outlet channel flows into the drain pipe in sequence through the water guide pipe and the overflow pipe. The buoyancy mechanism includes a first float located above the normal working water level of the water storage chamber. When the first float is in the third falling position, it controls the inlet end of the overflow pipe to close so that the water storage chamber is disconnected from the overflow pipe. When the first float is in the floating position, it controls the inlet end of the overflow pipe to open so that the water storage chamber is connected to the overflow pipe.

[0119] Specifically, in this embodiment, an opening can be provided on the side wall of the overflow pipe, and the outlet end of the water guide pipe is connected to the overflow pipe through the opening; the flow passage pipe in this embodiment can also be integrally formed on the valve stem of the drain valve. When the valve core is in the rising position, the outlet end of the flow passage pipe is still connected to the drain channel through the drain outlet, so that the pressurized water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

[0120] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0121] Example 7

[0122] This embodiment is basically the same as Embodiment 1, except that:

[0123] In this embodiment (not shown), the outlet end of the water guide pipe is directly connected to the overflow pipe (i.e., the flow pipe), thereby enabling the pressurized water flowing out of the outlet channel to flow to the toilet bowl through the overflow pipe (i.e., the flow pipe). The water guide pipe is specifically a flexible hose. It also includes a one-way valve located at the inlet end of the overflow pipe. The outlet channel of the flushing valve is connected to the overflow pipe through the water guide pipe, so that the water flowing out of the outlet channel flows into the drain pipe in sequence through the water guide pipe and the overflow pipe. When the water level in the storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under the action of the water pressure in the storage chamber, so that the water in the storage chamber can flow out from the overflow pipe to the toilet bowl, realizing the overflow function of the water tank. When the water level in the storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent the water flowing out of the outlet channel from flowing into the storage chamber through the inlet end of the overflow pipe.

[0124] Specifically, in this embodiment, an opening can be provided on the side wall of the overflow pipe, and the outlet end of the water guide pipe is connected to the overflow pipe through the opening; the flow passage pipe in this embodiment can also be integrally formed on the valve stem of the drain valve. When the valve core is in the rising position, the outlet end of the flow passage pipe is still connected to the drain channel through the drain outlet, so that the pressurized water flowing out of the water outlet channel flows to the toilet bowl through the drain channel.

[0125] In this embodiment, the structure and principle of the remaining undescribed parts are the same as in Embodiment 1, and will not be repeated here.

[0126] As described above, compared to the prior art, this invention, by setting up an auxiliary flushing valve, connects the inlet channel of the auxiliary flushing valve to a water source, and discharges pressurized water from the outlet channel of the auxiliary flushing valve to the toilet bowl. This utilizes the pressurized water from the outlet channel to assist in flushing the toilet bowl, effectively improving the flushing effect of existing low-positioned water tank flushing devices. Furthermore, the outlet end of the flow pipe connects to the drainage channel, or the outlet end of the flow pipe passes through the drainage channel and connects directly or indirectly to the toilet bowl. On the one hand, this eliminates the need for additional through-holes in the water tank wall for the pipe to guide water from the outlet channel to the toilet bowl, avoiding the risk of water tank leakage caused by adding a pipe through the water tank due to the auxiliary flushing valve. On the other hand, it facilitates the replacement of the ordinary drain valve of existing water tank flushing devices with the drain valve and auxiliary flushing valve of this invention to improve the flushing effect, making modification or repair easy and cost-effective.

[0127] The above embodiments are only used to further illustrate a water tank flushing device for improving flushing ability and a toilet having the same, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A water tank flushing device for improving flushing capacity, characterized in that, The toilet includes a water tank with a water storage chamber, a drain valve located within the water storage chamber for controlling drainage from the water tank, a drain pipe connecting the drain valve to the toilet bowl via a drain channel, and a flushing valve with an inlet channel and an outlet channel. The inlet channel is connected to a water source, and the outlet end of the outlet channel is located within the water storage chamber. Pressurized water flowing from the outlet channel flows to the toilet bowl via the drain channel. The toilet also includes an activation mechanism for opening the flushing valve and the drain valve. The flushing valve is located within the water storage chamber, and the water source provides pressurized water to the inlet channel. The flushing valve includes a control mechanism and a first valve body with the inlet channel and the outlet channel. The control mechanism is capable of moving up and down between a high position and a low position. The valve includes a second float and a limiting member movably mounted on the first valve body, capable of moving between a limiting position and a yielding position. When the limiting member is in the limiting position, it can limit the second float to a low position. When the limiting member is in the yielding position, it can release the limiting of the second float, allowing the second float to rise to the high position. When the second float is in the high position, the control mechanism controls the inlet and outlet channels to connect. When the second float is in the low position, the control mechanism controls the inlet and outlet channels to disconnect, and the limiting member can reset from the yielding position to the limiting position. The starting mechanism opens the flushing valve by driving the limiting member from the limiting position to the yielding position. Alternatively, the flushing valve includes a first valve body with a water storage chamber, a piston movably disposed within the water storage chamber, and a drive mechanism pulsatingly connected to the piston. The first valve body is provided with an inlet channel and an outlet channel, both of which communicate with the water storage chamber. When the drive mechanism drives the piston to move to compress the volume of the water storage chamber, the water in the water storage chamber can be discharged from the outlet channel. Alternatively, the flushing valve may be a solenoid valve, and the water source may provide pressurized water to the inlet channel; Alternatively, the flushing valve may be a water pump, and the water source may be water in the water tank or water outside the water tank. The drain valve and the limiting member are linked and cooperate. During the process of the starting mechanism opening the drain valve, the starting mechanism drives the limiting member to move from the limiting position to the yielding position through the drain valve; or, during the process of the starting mechanism opening the drain valve, the starting mechanism directly drives the limiting member to move from the limiting position to the yielding position; or, the starting mechanism includes a first starting mechanism and a second starting mechanism that are independently arranged, the first starting mechanism is used to open the drain valve, and the second starting mechanism is used to drive the limiting member to move from the limiting position to the yielding position. The drain valve includes a base mounted on the water tank and a main valve mounted on the base. The base has a drain channel, and the upper opening of the drain channel forms the drain port of the drain valve. The drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain port. The main valve includes a second valve body and a valve core mounted on the second valve body that can move up and down between a rising position and a falling position. The valve core has an abutment portion. When the valve core is in the falling position, it can close the drain port. When the valve core is in the rising position, it can open the drain port. During the process of the actuation mechanism driving the valve core to rise from the falling position to the rising position, the valve core can drive the limiting member to move from the limiting position to the yielding position through the abutment portion and the abutment of the limiting member.

2. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, It also includes a flow passage pipe, the inlet end of which is located inside the water storage chamber; the outlet end of which is connected to the drainage channel, or the outlet end of which passes through the drainage channel and is directly or indirectly connected to the toilet bowl; the pressurized water flowing out of the water outlet channel flows into the toilet bowl through the flow passage pipe.

3. The water tank flushing device for improving flushing capacity according to claim 2, characterized in that, The flow passage is formed independently and then installed on the drain valve; or, the flow passage and the drain valve are formed integrally.

4. The water tank flushing device for improving flushing capacity according to claim 2, characterized in that, The drain valve includes a base mounted on the water tank and a main valve mounted on the base. The base is provided with a drain channel. The upper opening of the drain channel forms the drain outlet of the drain valve. The drain valve connects or disconnects the water storage chamber and the drain channel by opening or closing the drain outlet. The lower opening of the drain channel is connected to the drain pipe. The flow pipe is located within the water storage chamber, and its outlet end is connected to the drainage channel via the drain outlet; alternatively, the flow pipe is located within the water storage chamber, and the drainage channel has a side opening on its side wall, with the outlet end of the flow pipe connected to the drainage channel via the side opening; alternatively, the outlet end of the flow pipe passes through the drain outlet and the lower opening of the drainage channel in sequence and is directly or indirectly connected to the toilet bowl; alternatively, the drainage channel has a side opening on its side wall, and the outlet end of the flow pipe passes through the side opening and the lower opening of the drainage channel in sequence and is directly or indirectly connected to the toilet bowl.

5. The water tank flushing device for improving flushing capacity according to claim 4, characterized in that, The main valve includes a second valve body and a valve core disposed within the second valve body and capable of moving up and down between an upward position and a downward position. The valve core includes a valve stem and a valve plate connected to the bottom end of the valve stem. The flow passage is integrally formed on the valve stem, and the outlet end of the flow passage is connected to the drainage channel through the drain port. When the valve core is in the downward position, the valve plate closes the drain port; when the valve core is in the upward position, the valve plate opens the drain port.

6. The water tank flushing device for improving flushing capacity according to any one of claims 2 to 5, characterized in that, The inlet end of the flow passage is located above the normal operating water level of the water storage chamber, and the inlet end of the flow passage can be connected to the water storage chamber to serve as the overflow pipe of the water tank; or, the inlet end of the flow passage is connected to the outlet end of the water outlet channel, and the flow passage is set independently of the overflow pipe of the water tank.

7. The water tank flushing device for improving flushing capacity according to claim 6, characterized in that, When the flow passage is used as the overflow passage of the water tank, it also includes a water guide pipe, and the outlet end of the water outlet channel is connected to the inlet end of the water guide pipe. The outlet end of the water guide pipe passes through the overflow pipe and is directly or indirectly connected to the toilet bowl, forming an overflow gap between the water guide pipe and the overflow pipe that connects the water storage chamber and the toilet bowl; or, the outlet end of the water guide pipe is directly connected to the overflow pipe.

8. The water tank flushing device for improving flushing capacity according to claim 7, characterized in that, The drain pipe includes a first drain pipe and a second drain pipe disposed on the seat of the toilet. The drain channel is connected to the toilet bowl in sequence through the first drain pipe and the second drain pipe. The outlet end of the water guide pipe passes through the overflow pipe and is connected to the first drain pipe; or, the outlet end of the water guide pipe passes through the overflow pipe and the first drain pipe in sequence and is connected to the second drain pipe; or, the outlet end of the water guide pipe passes through the overflow pipe, the first drain pipe and the second drain pipe in sequence and is directly connected to the toilet bowl.

9. The water tank flushing device for improving flushing capacity according to claim 7, characterized in that, The outlet end of the water guide pipe is directly connected to the overflow pipe; It also includes a buoyancy mechanism for controlling the opening and closing of the inlet end of the overflow pipe. The buoyancy mechanism includes a first float located above the normal working water level of the water storage chamber. When the first float is in the third falling position, it controls the inlet end of the overflow pipe to close so that the water storage chamber is disconnected from the overflow pipe. When the first float is in the floating position, it controls the inlet end of the overflow pipe to open so that the water storage chamber is connected to the overflow pipe. Alternatively, it may include a one-way valve located at the inlet end of the overflow pipe; when the water level in the storage chamber is higher than the inlet end of the overflow pipe, the one-way valve can open the inlet end of the overflow pipe in one direction under the water pressure in the storage chamber so that the water in the storage chamber can flow out from the overflow pipe; when the water level in the storage chamber is not higher than the inlet end of the overflow pipe, the one-way valve closes the inlet end of the overflow pipe to prevent the water flowing out of the outlet channel from flowing into the storage chamber through the inlet end of the overflow pipe.

10. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The flushing valve further includes a water-stopping element movably disposed on the first valve body and movable between the water inlet position and the water-stopping position. The water-stopping element cooperates with the first valve body to form a back pressure chamber. A flow channel connecting the water inlet channel and the back pressure chamber is provided. A pressure relief hole is provided on the wall of the back pressure chamber. When the water-stopping element is in the water inlet position, the water inlet channel and the water outlet channel are connected. When the water-stopping element is in the water-stopping position, the water-stopping element disconnects the water inlet channel and the water outlet channel. When the second float is in the high position, the control mechanism opens the pressure relief hole to control the water-stopping element to move to the water inlet position. When the second float is in the low position, the control mechanism closes the pressure relief hole to control the water-stopping element to move to the water-stopping position.

11. The water tank flushing device for improving flushing capacity according to claim 10, characterized in that, The control mechanism further includes a movable component movably disposed on the first valve body and cooperating with the opening and closing of the pressure relief hole; the second float is linked to the movable component; when the second float rises to the high position, the movable component opens the pressure relief hole; when the second float is at the low position, the movable component closes the pressure relief hole.

12. The water tank flushing device for improving flushing capacity according to claim 11, characterized in that, When the second float is in the low position, the movable component can return to the position of closing the pressure relief hole under its own weight; or, a first elastic element is provided between the movable component and the first valve body, and when the second float is in the low position, the movable component can return to the position of closing the pressure relief hole under the action of the first elastic element; or, the movable component has a third counterweight, and when the second float is in the low position, the movable component can return to the position of closing the pressure relief hole under the action of the third counterweight; or, a magnetic structure with attraction or repulsion is provided between the movable component and the first valve body, and when the second float is in the low position, the movable component can return to the position of closing the pressure relief hole under the magnetic force of the magnetic structure.

13. The water tank flushing device for improving flushing capacity according to claim 12, characterized in that, The low position includes a first falling position and a second falling position, the height of the first falling position being higher than the second falling position; after the water tank is drained, the second float falls to the second falling position along with the water level in the water tank; during the water tank filling process, the second float rises with the water level in the water tank and is limited to the first falling position by the limiting member in the limiting position; when the second float is in the first falling position, under the action of the self-weight of the movable part or the elastic force of the first elastic part or the magnetic force of the magnetic structure or the weight of the third counterweight, the movable part presses against the first valve body and closes the pressure relief hole; when the second float is in the second falling position, under the combined action of the self-weight of the movable part or the elastic force of the first elastic part or the magnetic force of the magnetic structure or the weight of the third counterweight and the weight of the second float, the movable part presses against the first valve body and closes the pressure relief hole.

14. The water tank flushing device for improving flushing capacity according to claim 11, characterized in that, The movable component is a rocker arm that is rotatably mounted on the first valve body; One end of the swing arm is linked to the second float, the other end of the swing arm is connected to the pressure relief hole for opening and closing, and the middle part of the swing arm is rotatably connected to the first valve body; or, one end of the swing arm is linked to the second float, the other end of the swing arm is rotatably connected to the first valve body, and the middle part of the swing arm is connected to the pressure relief hole for opening and closing.

15. The water tank flushing device for improving flushing capacity according to claim 14, characterized in that, The abutting part is rotatably disposed on the valve core and can rotate between a first position and a second position; when the abutting part is in the first position, the valve core can drive the limiting member to move from the limiting position to the yielding position through the abutting engagement between the abutting part and the limiting member; after the valve core drives the limiting member to move from the limiting position to the yielding position, the abutting part and the limiting member lose their abutting engagement; during the process of the valve core resetting from the rising position to the falling position, the abutting part abuts against the limiting member and rotates from the first position to the second position to yield to the limiting member, thereby allowing the valve core to continue to descend; when the valve core resets to the falling position, the abutting part can reset from the second position to the first position; The abutting part can be reset from the second position to the first position under its own weight; or, a third elastic element is provided between the abutting part and the valve core, and the abutting part can be reset from the second position to the first position under the action of the third elastic element; or, the abutting part is equipped with a second counterweight, and the abutting part can be reset from the second position to the first position under the action of the second counterweight.

16. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The starting mechanism includes a button that can abut against the limiting member. When the button is pressed to open the drain valve, the button abuts against the limiting member to move the limiting member from the limiting position to the yielding position.

17. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The limiting member can be reset from the yielding position to the limiting position under its own weight; or, a second elastic member is provided between the limiting member and the first valve body, and the limiting member can be reset from the yielding position to the limiting position under the action of the second elastic member; or, the limiting member is equipped with a first counterweight, and the limiting member can be reset from the yielding position to the limiting position under the action of the first counterweight.

18. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The limiting member is rotatably or slidably disposed on the first valve body.

19. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The driving mechanism is an electric driving mechanism; or, the driving mechanism is linked with the drain valve, and the piston is driven by the driving mechanism to compress the volume of the water storage chamber during the process of the drain valve opening the drain outlet; or, the driving mechanism is linked with the starting mechanism that opens the drain valve, and the piston is driven by the driving mechanism to compress the volume of the water storage chamber during the process of the starting mechanism opening the drain valve.

20. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The water storage chamber is equipped with a water inlet valve. The inlet of the water inlet valve is connected to the water source, and the outlet of the water inlet valve is connected to the water inlet channel through a water supply pipe to replenish the water storage chamber.

21. The water tank flushing device for improving flushing capacity according to claim 1, characterized in that, The outlet of the water inlet channel and the inlet of the water outlet channel are both located at the top of the water storage chamber.

22. The water tank flushing device for improving flushing capacity according to any one of claims 1 to 5, characterized in that, The flushing valve is located inside the water storage chamber, and the flushing valve is connected to the drain valve.

23. A toilet, characterized in that, It includes a toilet seat with a bowl and a water tank flushing device for improving flushing capacity as described in any one of claims 1 to 22.

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